not sure what this is

Discussion in 'General Discussions and Advice' started by Ethanjordanu, 2 Aug 2014.

  1. Ethanjordanu

    Ethanjordanu

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    Hi I got this growing on my skimmer box in my tank looks like little worms but not sure if its little feathers ? Any info

    20140802_074458.jpg
     
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  3. NJH

    NJH

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     That is a siliceous sponge and are filter feeders and their presence and growth indicates a healthy system.
     
  4. viper357

    viper357 Admin MASA Contributor

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    Commonly known as Pineapple Sponges
     
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